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LD1117DT25CTR
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LD1117DT25CTR

Product Overview

  • Category: Linear Voltage Regulator
  • Use: Voltage regulation in electronic circuits
  • Characteristics: Low dropout, high accuracy, low quiescent current
  • Package: SOT-223
  • Essence: Integrated circuit for voltage regulation
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.75V to 15V
  • Output Voltage: 2.5V
  • Output Current: Up to 800mA
  • Dropout Voltage: 1.2V (typical)
  • Quiescent Current: 5mA (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD1117DT25CTR has three pins:

  1. Input Pin (VIN): Connects to the input voltage source.
  2. Ground Pin (GND): Connected to the ground reference of the circuit.
  3. Output Pin (VOUT): Provides the regulated output voltage.

Functional Features

  • Low Dropout: The LD1117DT25CTR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
  • High Accuracy: It provides a highly accurate output voltage of 2.5V, ensuring precise voltage regulation in electronic circuits.
  • Low Quiescent Current: The regulator consumes minimal current when there is no load, reducing power consumption and extending battery life.

Advantages and Disadvantages

Advantages: - High accuracy and stability in voltage regulation. - Low dropout voltage enables efficient regulation even with low input voltages. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited output current capacity (up to 800mA). - Requires external capacitors for stability and noise reduction.

Working Principles

The LD1117DT25CTR is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor to maintain a constant output voltage. The dropout voltage is minimized through the use of a PNP pass transistor.

Detailed Application Field Plans

The LD1117DT25CTR is commonly used in various electronic applications, including:

  1. Battery-Powered Devices: Provides stable voltage regulation in portable devices such as smartphones, tablets, and portable audio players.
  2. Embedded Systems: Ensures reliable voltage supply in microcontroller-based systems, sensors, and other embedded applications.
  3. Automotive Electronics: Used in automotive circuits for voltage regulation, ensuring stable operation of various components.
  4. Industrial Control Systems: Provides regulated voltage for control systems, PLCs, and industrial automation equipment.

Detailed and Complete Alternative Models

  1. LM1117-2.5: Similar specifications and pin configuration, available in different packages.
  2. LT1761-2.5: Low dropout regulator with similar characteristics, suitable for space-constrained applications.
  3. MCP1702-2.5: Low quiescent current regulator with comparable performance, available at a lower cost.

These alternative models offer similar functionality and can be considered as replacements for the LD1117DT25CTR in various applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van LD1117DT25CTR in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of LD1117DT25CTR in technical solutions:

  1. Q: What is LD1117DT25CTR? A: LD1117DT25CTR is a low dropout voltage regulator that provides a fixed output voltage of 2.5V.

  2. Q: What is the maximum input voltage for LD1117DT25CTR? A: The maximum input voltage for LD1117DT25CTR is typically 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117DT25CTR? A: The dropout voltage of LD1117DT25CTR is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117DT25CTR be used to regulate higher voltages? A: No, LD1117DT25CTR is specifically designed to regulate voltages down to 2.5V. It cannot be used to regulate higher voltages.

  5. Q: What is the maximum output current of LD1117DT25CTR? A: LD1117DT25CTR can provide a maximum output current of 800mA.

  6. Q: Is LD1117DT25CTR suitable for battery-powered applications? A: Yes, LD1117DT25CTR is commonly used in battery-powered applications due to its low dropout voltage and low quiescent current.

  7. Q: Does LD1117DT25CTR require any external components for operation? A: Yes, LD1117DT25CTR requires an input capacitor and an output capacitor for stability and proper operation.

  8. Q: Can LD1117DT25CTR handle short-circuit conditions? A: Yes, LD1117DT25CTR has built-in protection features that allow it to handle short-circuit conditions without damage.

  9. Q: Can LD1117DT25CTR operate in high-temperature environments? A: LD1117DT25CTR has a maximum junction temperature of 125°C, making it suitable for operation in moderate to high-temperature environments.

  10. Q: Is LD1117DT25CTR available in different package options? A: Yes, LD1117DT25CTR is available in various package options, including SOT-223 and DPAK, to suit different application requirements.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and manufacturer recommendations.